Pull-switch.



G. W. GOODRIDGE. PULL SWITCH. APPLICATION FILED DEC. 14, 1910.

, 5] Wue Moz 5.5 186 flfig z s W God rage Patented Feb .21,1911.

A pin s'r GILBERT W. GOODRIDGtE, 0F. BRIDGEPORT, ELECTRIC COMPANY, OF BRIDGEPORT,

N EGTICUT.

To all whom it may concern:

Be it known that I, GILBEirr GOOD-- RIDGE, a citizen of the United States of America, and residing at'Bridge ort, in the county of Fairfield and State of onnectiout, have invented a certain new and useful Improvement in Pull-Switches, of which the In the manufacture of balls for pull chains for switches of the character referred to, there is a variation in the size of the "balls and in the lengths of the links connecting,

' the same, which renders it diflicult at times its socket, if after a pull the to adj ust the chain in the rail. Furthermore, there is a tendency of the chain to jump in the rail and to loosen the chain is permitted to snap back under the influence of the ratchet spring, To avoid these difliculties, I now propose to wedge the ball or balls adjacent the end ball firmly in the rail by offsetting one side of the latter, in suitable fashion. One way of doing this is illustrated in the drawings and'consists in shearing down at 5 one side of the end of the rail 6, adjacent the socket 7 and pressing the Specification of Letters Patent. Application filed December 14, 1910. Serial R0. 597,312.

end ball fronr comrm'rmvr, ABBIGNOB mo mu BRYANT comcmcurr, A coaromrma or con- PULL-SWITC fl fee end oi the' wing 8 so formed into the ball channel. Inasmuch as the metal of which the-part is constructed has a certain amount of resiliency, the wing 8 forms in effect-a spring member which not only keeps the second ball 9 of the chain tight in the channel, but also serves to wedge it apart from the socket ball 10 and thus keeps the link 11 in the slot 12, and the end ball tight in the socket irrespective of size. Furthermore the danger of a snap back of the chain under the influence .of the ratchet-spring, is

much lessened since the spring. wing 8 keeps the socket ball and its neighbor in position in spiteof the jump'of the other balls of the chain. v e

Other ways of accomplishing the results mentioned .will readily suggest themselves and I do not limit mysmfto the precise structure shown. l

I claim as my invention l 1. In a chain rail for pull switches, means acting on an adjacent ball to hold the end ball of the chain in its socket,

2. In a chain rail for means for holdingthe end ball in its socket.

Patented Feb. 2 1, 1911. 6

pull sockets, spring 3. A chain rail having one side offset adjacent the ball socket, for the purpose specified.

In testimony whereof I have signed 'my name to this specification, in the presence of two subscribing witnesses.

GILBERT W. GOODRIDGE.- Witnesses:

L. B. WHEELER, H. M. W'Io'HER'r. 

